Embedded type system positioning spinning method

ABSTRACT

On each draft element of a ring spinning frame, two pieces of short-staple roving from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel in parallel, two pieces of filament are fed from the back of the front roller, and combine with two pieces of roving at front jaw respectively. The drafted two pieces of roving and filament are output from the front jaw and enter into the twisting triangle area to be twisted, and then are wound onto a yarn bobbin to produce yarn. Based on the relative position of the two pieces of roving and two pieces of filament, different yarns can be produced. Furthermore, multi-component yarn, such as core structure, wrapped structure, strand-like structure, can be produced on a ring spinning frame. The structure of yarn can be precisely determined. Special fiber yarn can be produced on traditional spinning frame.

BACKGROUND OF THE PRESENT INVENTION

1. Field of Invention

The present invention relates to spinning process, and more particularly to a spinning method that can produce yarns of various structures using a ring spinning frame.

2. Description of Related Arts

With the development of the textile material and increasing demand for style and design of the costume fabric, the demand for spinning process is higher and higher, such as super high count yarn, multi-component composite yarn. More researches focus on the spinning process, and various spinning processes have been developed, such as Sirofil spinning, Siro spinning, compact spinning, cable spinning and so on. These new spinning processes greatly improve the yarn quality. For example, Sirofil spinning can produce core structure yarn with a filament and a short-staple roving; Siro spinning can double and twist two pieces of roving, which can improve the spinning quality and the fineness of the yarn; cable spinning divides a roving into many strands using a groovy roller and doubles and twists the strands, so as to reduce the hairiness of the yarn and improve the yarn quality; compact spinning controls the movement of the fiber of the twisting strands to reduce the formation of the hairiness by utilizing negative pressure wind suction or magnetic loading, so as to improve the density and quality of the yarn. However, the above-mentioned spinning processes still can not meet the demand for various types of yarns. For example, though Sirofil spinning can produce core structure yarn with a filament and a short-staple roving, the wrapping effect is not very good, i.e. the yarn in center easily comes out; Siro spinning can double and twist two pieces of roving, but there will be a lot of broken ends when producing high count yarn, because the fiber of each roving strand in the twisting triangle area is very small.

SUMMARY OF THE PRESENT INVENTION

An object of the present invention is to provide an embedded type system positioning spinning method, which can produce multi-component multi-structure yarn on one ring spinning frame, so as to meet the demand for new textile material and special structure.

Accordingly, in order to accomplish the above object, the present invention provides an embedded type system positioning spinning method. On each draft element of a ring spinning frame, two pieces of short-staple roving a and a′ from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel in parallel, wherein the draft mechanism comprises a back roller, a back leather roller, a middle roller, a middle leather roller, an apron, a front roller and a front leather roller; two pieces of filament b and b′ are fed from the back of the front roller via a guide wire or a guide wheel, wherein two pieces of filament b and b′ are parallel with two pieces of roving a and a′ respectively, and the filament b meets with the roving a and the filament b′ meets with the roving a′ at a front jaw. The drafted two pieces of roving a and a′ and two pieces of filament b and b′ enter into a twisting triangle area to be twisted, and then are wound onto a yarn bobbin via a guide wire.

The parallel filament b and b′ are fed via a guide wire or a guide wheel. At front jaw, the relative position between the parallel filament b and b′ and the parallel roving a and a′ are illustrated as follows respectively. The filament b and b′ are at inner side of the roving a and a′; the filament b and b′ are at outer side of the roving a and a′; the filament b overlaps the roving a and the filament b′ overlaps the roving a′; the roving a is between the filament b and b′, and the roving a′ is at the outer side of the filament b′. The two short-staple roving a and a′ are the same material; two filament b and b′ are the same material; two filament b and b′ are silk or chemical fiber filament or short-staple yarn.

Using the above process, by the changing the relative position of the two pieces of roving and two pieces of filament, the multi-component yarn of core structure, wrapped structure, or strand-like structure can be produced at one ring spinning frame. The structure of yarn can be precisely determined. The structure of the yarn is more compact, and the hairiness and strength of the yarn are better. In the present invention, the two pieces of filament can support two pieces of roving in the twisting triangle area, so as to prevent the breaking ends. Special fiber yarn, such as hemp, apocynum and so on, can be produced on a traditional spinning device, so that the range of textile material is enlarged. At the same time, the alteration on the original device is simple and the altered device is convenient to use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of spinning process according to a preferred embodiment of the present invention.

FIG. 2 is a schematic view of a twisting area of FIG. 1.

FIG. 3 is a schematic view, illustrating the filament is fed at outer side of the roving.

FIG. 4 is a schematic view, illustrating the filament is fed at inner side of the roving.

FIG. 5 is a schematic view, illustrating the filament overlaps with the roving.

FIG. 6 is a schematic view, illustrating a filament is between two pieces of roving and a roving is between two pieces of filament.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 and 2 of the drawings, on each draft element of a ring spinning frame, two pieces of short-staple roving a and a′ from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel 1 in parallel, wherein the draft mechanism comprises a back roller 2, a back leather roller 2′, a middle roller 3, a middle leather roller 3′, an apron, a front roller 5 and a front leather roller 5′; two pieces of filament b and b′ are fed from the back of the front roller 5, and meet with the two pieces of roving a and a′ respectively at a front jaw comprising the front roller 5 and the front leather roller 5′. The drafted two pieces of roving a and a′ and two pieces of filament b and b′ enter into a twisting triangle area to be twisted, and then are wound onto a yarn bobbin 7 via a guide wire 6.

FIG. 3 through FIG. 6 are schematic views of the operating principle of the present invention, when the two pieces of filament b and b′ and short-staple roving a and a′ are fed from different relative positions. When the filament b and b′ and short-staple roving a and a′ are fed from different relative positions, with different feeding tensions of the filament b and b′, different diameters of the filament b and b′ and different twist factors, different yarn structures can be obtained. Referring to the feeding position shown in FIG. 3, a wrapped yarn can be produced with the short-staple inside and filament outside. Referring to the feeding position shown in FIG. 4, a core spun yarn can be produced with the filament inside and short-staple outside. Referring to the feeding position shown in FIG. 5 and 6, a kind of yarn similar to a strand structure can be produced. Of course, when the processing parameters are set improperly, a disordered structure with entangled filament and shot-staple may be produced. However, the overall quality level, such as hairiness and strength, still can be improved.

The present invention can be applied into spinning process, such as wool spinning, cotton spinning, linen spinning, and silk spinning and so on, that is to say that the short-staple roving can be cotton, wool, linen, silk and roving made of short chemical fiber. The two pieces of short-staple roving can be the same material or different material. The filament can be chemical fiber, silk or yarn made of short fibers.

The present invention can also be applied to produce high count yarn and super-high count yarn, and to produce the fiber yarn that is difficult to be produced in conventional spinning method, such as the short fiber, low ultra fine wool yarn, kapok fiber, alginate fiber, apocynum fibre, basalt fiber, hemp fiber, rabbit hair and so on, which has short fiber and low strength. Therefore, the present invention can be applied to various materials.

The present invention can also achieve the effect of Siro spinning and Sirofil spinning by changing the number of the fed short-staple roving and filament. The present invention can replace the Siro spinning and Sirofil spinning. When the two pieces of roving are combined to one or one roving is fed, the yarn produced has yarn structure of Sirofil spinning. When only two pieces of roving are fed without filament, the yarn produced has yarn structure of Siro spinning. There can be many other variations in the present invention, for example, two pieces of roving and one piece of filament are fed, and the filament is between the two pieces of roving; one piece of roving and two pieces of filament are fed, and the roving is between the two pieces of filament. Therefore, many kinds of compound yarn can be produced with the present invention, which can be widely used.

The feather and application of the present invention is further illustrated in the examples below.

EXAMPLE 1 Silk Style Yarn Produced by the Cotton Ring Spinning Frame

Two pieces of cotton roving a and a′ from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel 1 in parallel; two pieces of silk b and b′ are fed from the back of the front roller 5 via a guide wire or a guide wheel. The silk b and b′ must be parallel with the cotton roving a and a′ respectively. The silk b and b′ are at the outer side of the cotton roving a and a′. The drafted two pieces of cotton roving a and a′ and two pieces of silk b and b′ are output from the front jaw and enter into the twisting triangle area to be twisted, and then are wound onto a yarn bobbin 7 via a guide wire 6. The yarn produced in this method has silk surface and cotton roving core, so that the fabric made of this kind of yarn has silk style, and cost is extremely lowered.

EXAMPLE 2 Wool Core Spun Yarn

Two pieces of wool roving a and a′ from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel 1 in parallel; two pieces of polyester filament b and b′ are fed from the back of the front roller 5 via a guide wire or a guide wheel. The polyester filament b and b′ must be parallel with the wool roving a and a′ respectively. The polyester filament b and b′ are at the inner side of the wool roving a and a′. The drafted two pieces of wool roving a and a′ and two pieces of polyester filament b and b′ are output from the front jaw and enter into the twisting triangle area to be twisted, and then are wound onto a yarn bobbin 7 via a guide wire 6. The yarn produced in this method has wool surface and polyester filament core, so that the yarn has wool style, and cost is extremely lowered.

EXAMPLE 3 Ramie High Count Yarn

Two pieces of ramie roving a and a′ from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel 1 in parallel; two pieces of fine denier polyester filament of 50-200 denier b and b′ are fed from the back of the front roller 5 via a guide wire or a guide wheel. The polyester filament b and b′ must be parallel with the ramie roving a and a′ respectively, wherein the polyester filament b and the roving a overlap and the polyester filament b′ and the roving a′ overlap. The drafted two pieces of ramie roving a and a′ and two pieces of polyester filament of b and b′ are output from the front jaw and enter into the twisting triangle area to be twisted, and then are wound onto a yarn bobbin 7 via a guide wire 6.

The ramie is difficult to be used to produce high count yarn, because its fiber is thick, rigid and has small cohesive force. Though high count yarn with over 80 denier can be produced by adopting Sirofil spinning, the produced yarn is ordinary core structure. The ramie fiber easily peels off, which will affect after processing and using effect. By adopting the above process, the produced yarn corresponds that two pieces of yarn of Sirofil spinning are twisted, and the polyester filament and ramie roving are entangled to be combined more closely, so as to prevent the ramie fiber from falling off, and obviously improve the hairiness of the yarn.

EXAMPLE 4 Wool High Count Yarn

Two pieces of roving made of ultra fine wool a and a′ from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel 1 in parallel; two pieces of fine denier water soluble vinylon filament of 20-50 denier b and b′ are fed from the back of the front roller 5 via a guide wire or a guide wheel. The polyester filament b and b′ must be parallel with the ramie roving a and a′ respectively, wherein water soluble vinylon filament b and b′ are at the outer side of the roving a and a′. The drafted two pieces of roving a and a′ and two pieces of water soluble vinylon filament of b and b′ are output from the front jaw and enter into the twisting triangle area to be twisted, and then are wound onto a yarn bobbin 7 via a guide wire 6. The yarn with water soluble vinylon filament wrapping wool is produced. Dissolve the water soluble vinylon filament in hot water to produce high count pure wool yarn. In order to improve the fineness of the yarn, two pieces of roving a and a′ can be combined, that is to feed only one roving.

The super high count yarn is usually 120 Ne cotton yarn or 220 Nm wool yarn. Because the number of the fibers in the cross section is very small due to high count, the yarn is difficult to be directly spun, so that water soluble filament is used during the spinning, and then the water soluble filament is dissolve. At present the super high count yarn is mainly produced by adopting filament Sirofil spinning. Because the number of the fibers in the cross section is very small, by adopting Sirofil spinning, the core is not well wrapped, there are a lot of broken ends during the spinning, and a lot of hairiness appears on the fiber after the water soluble filament is dissolved, which will affect the quality. However, the fiber made of the super high count yarn produced in the present invention has good quality, because the fiber of the accompanying filament is on the surface the yarn, and the dissolving of the filament will not affect the structure of the yarn. At the same time, the filament can support the strands output from the front jaw, which can also prevent the yarn from breaking during the spinning, so as to improve the spinning efficiency.

EXAMPLE 5 Special Fiber Yarn

At present, with the development of the fiber processing technology, a lot of natural fibers are developed, such as hemp fiber, apocynum fibre, and so on. These fibers are difficult to be spun on the spinning frame, due to such fibers are short and have low strength. By adopting the process of the present invention, these fibers can be spun. Taking hemp as an example, the process is illustrated in detailed as below.

Two pieces of roving made of hemp a and a′ from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel 1 in parallel; two pieces of fine denier polyester or other chemical filament of 20-120 denier b and b′ are fed from the back of the front roller 5 via a guide wire or a guide wheel. The filament b and b′ must be parallel with the hemp roving a and a′ respectively, wherein the roving a is between the filament b and b′, and the roving a′ is at the outer side of the filament b′. The drafted two pieces of roving a and a′ and two pieces of filament b and b′ are output from the front jaw and enter into the twisting triangle area to be twisted, and then are wound onto a yarn bobbin 7 via a guide wire 6. The chemical fiber of the filament improve the strength of the hemp fiber, so as to ensure that the hemp fiber can be twisted after output from the front jaw, and prevent the hemp fiber from breaking in the twisting triangle area. The filament in the yarn can ensure the integrity of the yarn, and the filament wraps the short fiber of hemp, the yarn has the feature of the hemp fiber.

EXAMPLE 6 Untwisted Yarn

The fibers in the center of the untwisted yarn are straight, paralleled and untwisted, and the fiber on the surface is wound on the surface of the yarn. The untwisted yarn is puffy, and is good material to make towel and underwear. At present, the untwisted yarn is processed using Sirofil spinning, and the quality of the yarn is not very good. The process using the process of the present invention is illustrated in detailed as below.

Two pieces of roving made of long-staple cotton a and a′ from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel 1 in parallel; two pieces of high count (over 80 Ne) S twist short-staple yarn b and b′ are fed from the back of the front roller 5 via a guide wire or a guide wheel. The S twist short-staple yarn b and b′ must be parallel with the cotton roving a and a′ respectively, wherein the S twist short-staple yarn b and b′ are at inner side of the cotton roving a and a′. The drafted two pieces of roving a and a′ and two pieces of S twist yarn b and b′ are output from the front jaw and enter into the twisting triangle area to be twisted, and then are wound onto a yarn bobbin 7 via a guide wire 6 to produce Z twist untwisted yarn with parallel in center and winding fiber on the surface. In order to improve the count of the yarn, one S twist short-staple yarn can be fed, and this yarn is between two pieces of roving a and a′. In this process, Z twist untwisted yarn with parallel in center and winding fiber on the surface can also be produced.

EXAMPLE 7 Polyester Viscose Blended Elastic Yarn

Two pieces of roving a and a′ from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel 1 in parallel, wherein the roving a is made of viscose staple fibre, and a′ is made of viscose staple fibre; two pieces of polyurethane filament b and b′ are fed from the back of the front roller 5 via a guide wire or a guide wheel. The polyurethane filament b and b′ must be parallel with the roving a and a′ respectively, wherein the polyurethane filament b and b′ are at inner side of the viscose roving a and a′. The drafted two pieces of roving a and a′ and two pieces of polyurethane filament are output from the front jaw and enter into the twisting triangle area to be twisted, and then are wound onto a yarn bobbin 7 via a guide wire 6 to produce polyester viscose blended elastic yarn.

EXAMPLE 8 Silk Type Elastic Yarn Spun on a Cotton Ring Spinning Frame

Two pieces of cotton roving a and a′ from the roving bobbin enter into the draft mechanism to be drafted though a guide funnel 1 in parallel; silk b and polyurethane filament b′ are fed from the back of the front roller 5 via a guide wire or a guide wheel. The silk b and polyurethane filament b′ must be parallel with the cotton roving a and a′ respectively, wherein the silk b is at outer side of cotton roving a and a′, and polyurethane filament b′ are at inner side of the cotton roving a and a′. The drafted two pieces of cotton roving a and a′ and silk b and polyurethane filament b′ are output from the front jaw and enter into the twisting triangle area to be twisted, and then are wound onto a yarn bobbin 7 via a guide wire 6. The yarn produced in this process has silk surface, cotton in middle and polyurethane filament core. The fabric made of this yarn has silk style, and good elasticity. The use of cotton lowers the cost of the yarn. 

1. An embedded type system positioning spinning method, comprising the following steps: on each draft element of a ring spinning frame, making two pieces of short-staple roving a and a′ from roving bobbins to enter into a draft mechanism to be drafted though a guide funnel in parallel, wherein the draft mechanism comprises a back roller, a back leather roller, a middle roller, a middle leather roller, an apron, a front roller and a front leather roller, feeding two pieces of filament b and b′ from the back of the front roller via a guide wire or a guide wheel, wherein two pieces of filament b and b′ are parallel with two pieces of roving a and a′ respectively, combining the filament b with the roving a, and combining the filament b′ with the roving a′ at a front jaw, twisting the drafted two pieces of roving a and a′ and two pieces of filament b and b′ output from the front jaw in a twisting triangle area, and winding the combined filament and roving onto a yarn bobbin via a guide wire.
 2. The embedded type system positioning spinning method, as recited in claim 1, wherein the parallel filament b and b′ are fed via a guide wire or a guide wheel, and at the front jaw, a relative position between the parallel filament b and b′ and the parallel roving a and a′ comprises four cases: the filament b and b′ are at inner side of the roving a and a′; the filament b and b′ are at outer side of the roving a and a′; the filament b overlaps the roving a and the filament b′ overlaps the roving a′; the roving a is between the filament b and b′, and the roving a′ is at the outer side of the filament b′.
 3. The embedded type system positioning spinning method, as recited in claim 1, wherein the two short-staple roving a and a′ are the same material.
 4. The embedded type system positioning spinning method, as recited in claim 1, wherein the two filament b and b′ are the same material.
 5. The embedded type system positioning spinning method, as recited in claim 1, wherein the two filament b and b′ are silk or chemical fiber filament or short-staple yarn. 